Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries full burden. It discloses a security-relevant trait (does not expose credentials), which is genuinely useful for a read operation, but omits what 'status' actually returns, whether it requires an active session, or any side effects.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.